Saint Calocerus (Italian: Caio, Calocero, Calogero) was a 2nd-century Christian martyr.
[2] The constancy of Faustinus and Jovita led to the conversion of Calocerus, who in turn converted Secundus of Asti.
[3] According to tradition, Calocerus preached at Albenga and was martyred in this town.
[2] A local cult devoted to Calocerus was limited to the dioceses of Brescia, Milan, Asti, Ivrea and Tortona.
[2] The alleged tomb of Saint Calocerus is conserved in the Civic Museum at Albenga.